. >> reporter: paul ryan tailgated with football fans in ohio. while mitt romney rallies supporters in the key battleground state. no republican has won the white house without a victory in ohio. >> i'm counting on you portsmouth. let's make it happen. >> reporter: saturday romney told the crowd in the major manufacturing state that the obama administration isn't holding china cattable for unfair -- accountable for unfair trade practices that cost americans job. >> i want to make sure that when people cheat, well they don't follow the rules in trade we finally hold them accountable. it's time for us to stand up to china for their cheating that's got to stop. >> reporter: voters say the economy is the number one issue in the election. >> i bet on american workers and american ingenuity and three years laters it's paying you have in a big way. >> reporter: president obama argues the decision saved jobs. >> gm is back. ford and chrysler are growing again. together our auto industry has created nearly a quarter of a million new jobs right here in ame